Can I put several view types in RecyclerView?

https://developer.android.com/intl/ko/training/material/lists-cards.html If you look here When you make RecyclerView, you include ViewHolder in RecyclerView.Adapter like the code below.

public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder> {

    private String[] mDataset;

    public MyAdapter(String[] myDataset) {
        mDataset = myDataset;
    }

    public static class ViewHolder extends RecyclerView.ViewHolder {
        public TextView mTextView;
        public ViewHolder(TextView v) {
            super(v);
            mTextView = v;
        }
    }

    @Override
    public MyAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.some_layout, parent, false);

        //findViewById...

        ViewHolder vh = new ViewHolder(v);
        return vh;
    }

    @Override
    public void onBindViewHolder(ViewHolder holder, int position) {
        holder.mTextView.setText(mDataset[position]);
    }

    @Override
    public int getItemCount() {
        return mDataset.length;
    }
}

My question is, can I put multiple view types in RecyclerView?

user-interface android recyclerview

2022-09-22 22:26

1 Answers

Yes, it's possible. You only need to implement getItemViewType(). And you can specify the viewType in onCreateViewHolder().

public class MyAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
    class ViewHolder0 extends RecyclerView.ViewHolder {
        ...
    }

    class ViewHolder2 extends RecyclerView.ViewHolder {
        ...
    }

    @Override
    public int getItemViewType(int position) {
        // // Just as an example, return 0 or 2 depending on position
        // // Note that unlike in ListView adapters, types don't have to be contiguous
        return position % 2 * 2;
    }

    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
         switch (viewType) {
             case0: return newViewHolder0(...); //ViewType1
             case 2: return new View Holder2(...); //2 view type
             ...
         }
    }
}

2022-09-22 22:26

If you have any answers or tips

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